Improvement in combined globe and check valves



'W. BROWN.

Comhin'ad Globe'and Chieck Valve. Ngwonoo'z.r

Patented March 23,1875.

INVENTO R:

THE GRAPHIO C0.PM OTO 'LITNSQ 8 4`I PARK PLAGE, N.Y.

UNITED STATES PATENT OFFICE.

ISAAC W. BROWN, OFGLENNV ILLE, MARYLAND, ASSIGNOR OF ONE-HALF HIS RIGHTTO JOHN LYNCH, JR., OF PORTLAND, MAINE.

IMPROVEMENT IN COMBINED GLOBE AND CHECK VALVES.

Specification forming part of Letters Patent No. 161,002, dated March23, 1875 application filed July 31, 1874.

To all whom it may concern:

Be it known that I, ISAAC W. BROWN, of Glenn ville, Prince Georgescounty, Maryland, have invented an Improvement in Combined Globe andCheck-Valves; and hereby declare that the following is a full, clear,and exact description thereof.

In order to more clearly define my invention I will refer to LettersPatent No. 102,085, bearing date April 19, 1870, granted to me, for animprovement in globe-valves, which j read as follows:

The object 0f this invention is to provide an arrangement whereby thevalves may be ground to their seats at any time lwhile in position, andany obstruction getting on the valve-seat may be readily removed.

My invention consists in constructing on each of the stems A and C ahand-wheel, separated by extending the stem C after it passes throughthe .hollow stem A a sufcient distance to enable a person to hold awheel in each hand, allowing himv to loosen and tighten the lower wheelwith one hand, while, at the same time, with the other hand he canoperate the upper vWheel for grinding the valve B on its seat. Thelengthened spring D willV give the stem C an easy upward motion whilethe kgrinding is taking place.

The object of my present invention is to make a combination of globe andcheck valves so that one valve may be used for either purpose.

My invention consists in constructing on the lower end of the stem C(refer to accompanying drawing) a square or fluted socket, B, into whichthe stem of the valve A works. The hollow or iluted socket B acts as aguide to the valve A to keep it in place, and also permits the rotationof the valve A on its seat for the purpose of grinding.

I claim- The combination of the hollow square or iluted socket B on thestem C and corresponding square or iiuted stem on valve D, for thepurpose of a combined globe and check valve, and to permit the rotationof the valve on its seatfor grinding or keeping tight while in use. Intestimony that I claim the foregoing I have hereunto set my hand andseal this 30th day of July, 1874.

J AMEs B. Bisnor, GEO. C. PYLE.

